Combination pressure-gage and pump connection for pneumatic tires.



D. BARNARD. COMBINATION PRESSURE GAGE AND PUMP CONNECTION FOR PNEUMATIC TIRES. APPLICATION FILED OCT. 7. 1909v 9156'67g Patented Mar.14,1911

' operation may hereinafter appear] .1 UNITED STATES PATEN navrs BABNARD, or LOS ANGELIES, CALIFORNIA, ASSIGNOR T0 mnmmn SPECIALTY comm, or LOS ANGELES, CALIFORNIA, A CORPORATION or c ALIroRNm. I

COMBIllTATION PRESSURE-GAGE AND 19mm CONNECTION m riinums'rrc; Trims. I

. 'To all-whom it may concern:

" Be it known that I, DAVIS BAnNAm), a

" citizen of the United States, and resident of ment upon; existing gages in respect to displaylng the*mdicatmg'numerals in a-more conspicuous manner; in being supplied with fan improved plunger against which the air pressure Ioperates; and an improved ar- .rangement of the spring against which'the ;airfpressure is opposed] when the gage is "opemted, to lengthen the life of sa d spring nmdimpro've its function.

'- Qvide an appliance which combines the func- ELAnother object of the invention is to protions of a pressure gage and air pump connection in an improved manner.-

I Still other objects such as compactness and'simplicity of construction and ease of I Still another object is to provide a more accurate gage of the spring controlledtype, and one that can be used a long timcbe fore the spring will need adjusting, and can be easily adjusted when necessary.

' The appliance can be used as a pressure either when attached to the pump or when disconnected therefrom. I

This invention is regarded as being' an Q improvement over other devices of its class in respect to the'provision of a longitudil n'ally movable valve plungeradapted to protect the gage by excluding therefrom, while the tire isbeing inflated, the high air pressures of reservoirs from which automobile tiresarc frequently supplied. This plungerralye: has the further advantage of bemg longitudinally slidablc so that the end of the plunger itself maybe used'to unseat I the; tire valve by direct contact therewith.

S0 air as I am aware, the two useful features just mentioned have not hitherto been combined'in' a single valve.

The invention consists in the various parts, combinations of parts and details of construction, described in connection with the accompanying drawings and then more in position for conducting air the i'ndicating numerals 'thereoin. f

definitely pointed out in specific claims. I

which illustrate the invention, Figure. 1,; s'

FFIICE. 1

eneric Referring to the accompanyingxdrawin' I Specification of Letters Patent. Pat nted Bl r. 14, 1911.

Application filed October 7, 1909. Serial-.No.521,540., I 1

a longitudinal mid-Section of'thelentire'apr 'pliance showing also a"portion'ofa-"tire valve, and illustrating the applianceiin zpo- 'sition' for conducting airffromthc:pump-to I the tire. I I that some of the interionpatsarcflcft' sectioned and} the" valve; plunge" 3 Fig; 2' is n similar section except ing the "si'irfacef of}theffindicatin hi t-W" pro ected to illustrateitlio'arrang,

Referring in detail 'to: jt hedraw n,

appiance consists of thc v'alve; "onnectio'n;F.

or coupling member =1,;:the3 pump 2, the gagcproper provided 'j'vith 3, and the plungcrorvalv(}{4. Referring first to the construction gage proper,* w ithin' the housing a hollow p ston plunger 5 the out which is desirably closed bya cap" having a fiange 7,said flange-coiiperating'fwith the outer end of the'housingi 3 to constitute; stopmeans .to limit the inwa rd m ovemeiitnf the] piston plunger- 'ln r ordcu't-o-provide; a smooth fit between thcfpluiiger 5j and .fhousing 3 the outer cnd' oi" 'said housinginay lic provided 'with an interior-flange S, and the internal end of the plunger 5 have-shrunk or turned thereon a ring! 9' adaptedfito lit withinthc housingi-l. 'lo'the insidcIof cap 6 is fastened by soldering or othermsethe tenfilolrsplillg ll with njthc; plungerfi, said tension spring being}; madefast at itsother end-to a threaded pi-n12 screwed "into the body 13. The means of attachment of :the

spring 11 to the'pin 12 may'consist of a nut 14 screwed on to the end of the pin 12, the

spring. 11 being soldered or otl ierwise -fastcned to said nut, and the lock"nut."15 being employed to scculethe nut 14 in adjusted position. w ThebodylB is provided with passages to aii'ord communication between a. tire and a pump and the housing 3. The movement of the air through these passages is controlledby theplunger orvalve 4. Said passages may consist of an intake passage 16 through.

which the air can enter from the pump to 1 sure the plunger 4 is fitted; 'a ge-supp'lyin passage 17 leadin from sai bore at a di ferent point in t e'length thereof to-the '5 interior of thegage to supply airthereto;'

and a passage through e sleeve.18 and lower portion of the plunger 4 for conducting th air from the pump to the ,tire, and in cer, ain cases froimtho tire to-the presdescribed. Y

In the drawings coupling member 1 is illustrated as'provided with a cap 19 screwed upon said member and clamping the washer 21 against the rubber member 22 to form an A air-tight fitting, but it is t0 be understoodthat any well-known means may be employed for'making the'connection-with the tire.

In Fig. 1, 23 designates a nipple of the tire valve, 24 the stem ofthe valve, 25 the valve seat, and 26 the .closure or valve proper. 26" is the valve spring.

The plunger 4 desirably consists of a tube I .the upper end of which is closed by a cap 25 27 and from the lower end of which projects 31 pin 28 adapted to unseat the valve stem 24' when the plunger is depressed. Said tubu- "lar plunger 4 is girdled by agroove or chan- "nel 29 the plunger being longitudinally movable to bring said channel into register with the passage 16 leading from the pump or passage 17 leading to the. age. One or more holes 30 lead from the interior-of the plunger through the wall thereof to the channel 29. Near the lower end of the plunger one or more holes 31 lead 0l1t .fif01n the interior of the plu eri-to afford c'qmmunication with the air $ithi hthe member 1.

' The lower end of the plunger 4 is cut away 40 at 31 opposite each hole 31 -to permit the air to enter said holes 31 when the plunger is drawn up into the tube 18. As seen in Fig. 2 the lower end of the plunger '18,"

where not .cut awa as just stated is .provided with a bea or external flange 32 which cooperates with the lower end of the tube 18 to form sto means to prevent the complete withdrawa of the plunger. The

pin 28 may be provided with a head 28[ which is soldered or otherwise fastened within the lowdr end of the, valve plunger 4.

It will be seen that the plunger 4, in addition to its function as a valve, forms aconvenient means for unseating the tire valve.

In one up and down movement or cycle said plunger 4 therefore performs the three functions of putting the pump connection and *pressure gage singly into communication with the tire valve, and of depressing the valve stem 24.

The indicating plunger is desirably pro vided with three rows of numerals so that the amount of ressure can be read of? from the same whic 'ever side comes nearest the 55 operator.

gage as will hereinafter be more fu'lly' to depress the with said gage, the end (if said pl in said sleeve, said plungler' being girdled b is at one-limit'of its travel and an When the device is coupled onto the tire valve to inflate the tires not shown) the valve spring 26 will tend to lift the lung? 4 nearly to the osition of Fig. 1 so t at t e move 29 will brought into register with 7 t e inlet passage 16 and airwill pass from the pump gnotshown) intothe member 1 thnou h va ve niyple 23 into the tire, the gage ingcut o from the pump. Then until the flange 32 strikes against t 0 lower end of sleeve 18. Toput the ga com-V munication with thetire, itis on y necessary Fig. 2. I c:l[aim: b 'j I 1. 11 com ination a ,a 'y' having a bore thereinfizplun e rg xtending slidab y through said bore, sai plunger ing provided.- with apassage therethrough to conduct air -froxna pum to a tire,' ,a pump-: connection with whic sai lpas'sagecomihw, nicates in one position" of,said pIungerQa pressure gage with which saidpassage come mumcates 'inanother; position off isa'id lunger, andmeans for utting saidj passage. into communication wit atirefij 2, In combination, a pressuregag'e, a havin abore therein, a hollow ungersli tt-ing said bore,vsaid ungerfbeiing provided with a groovei gir ing'the and a hole leadin from said:{' oove'to'the 4 interior of the ii-Hunger and-with anfaddi-- tional inlet: 1ea g'into theplungeratfa point spaced away from -s'md holeand1 0 groove, an air inlet to communicate .witha puinp, an air "outlet to; communicate; said ge, and means" for putting said addi-' tiona inlet into communication with'ajftire,

said plunger being slidable "to imove said groove out of communication with 'pump inlet and into communicationwith the inlet leading to the ga and vice versa.

3. The combination wit a gageproper, tire valve connection, an 'pum" connec 119 tion; of a longitudinal -.mova 16 valve plunger to o'penand close communicatian irig ada ted toautomatically unseat t e tire va vew en moved into-position tosupply air from the tire to-the gage, said plunger being adapted to open communication with said pump connection when moved in the re versedirection. 4. In combinations. body, a sleeve extending through said body, a. hollow lun slidabl fitted within said sleeve, a 0111 er carrie by said plunger ateach end thereof to limit t e movement of said plunger witha groove and having a ho e leadin from sai a assage which leads through said body an sleeve to aaid'groove when said plum! the air pressure will force the plunger 4 up 115 I plunger 4 to the position of.

passage which leads through said body and sleeve to said groove when said plunger is at the other limit of its travel, a pump connection to which one of said passages leads, a pressure gage to which the other passage leads, and means adapted to ut the interim of said plunger into communication with the interior of a pneumatic tire.

5 In combination, a pressure gage, a pump connection, a tire Valve connection,

and a plunger valve adapted to be moved iongitudinalty to put the-pump connection and i'essure a e sin 1 into communication with said tire valve, the end of said plunger being adapted to move against the 15 tire valve to unseat the same.

In testimony whereof I have hereunto signed my name in the presence of two subscribing Witnesses at Los Angeles, in the county of Los Angeies and State of Califor 20 nia, this 29th day of September, 1909.

DAVIS BARNARD.

Witnesses: VJ. S. LYSLE,

ALBERT H. MERRILL. 

